Profiling If you're looking for a MongoDB equivalent of SQL Profiler look no further than MongoTail; pretty new and running on Python it allows you to quickly connect, set profiling level and start to output the queries. You can then, of course, grep away to reduce the output and pipe where you like.

MongoChef http://3t.io/mongochef/ seriously the best MongoDB management tool you can get these days after RoboMongo pretty much-abandoned development post v3. Free licence for playing/open source gubbins, pretty fair 'user', rather than machine, licence when you pay to allow you to install it on however many laptops/pcs you use.

Download MongoDB to your local machine and install the client/tools (skip the server unless you really want to run that locally as well) in order to use the IntelliShell in MongoChef (nice handy interface, like SQL query window where you can type queries out with intellisense); it also has a Query Builder which can be handy, an aggregation query builder which is quite nice for building them up and reordering the pipeline before you commit it to code, and the ability to manage users and an often neglected feature in mongo clients AN EXPORT / IMPORT BUTTON.
The only thing that bugs me about MongoChef is the export as json; if you store ID's or .net style GUIDs as your bson id it's encoded; robomongo would spit that out as a guid, mongochef in csv mode spits it out as a guid, in json mode spits it out as the weird bson format. Small irritation to be honest :)